4. Nicolaus, commonly called Praepositus, to distinguish him from Nicolaus Myrepsus, was at the head of the celebrated medical school at Salerno, in the former half of the twelfth century, as appears from the fact of his work being commented on by Matthaeus Platearius. He is said to have belonged to a noble family, to have acquired considerable wealth, and to have been the principal physician of his age.
[W.A.G]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890